package jdbc;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;

/**
 * 设置事物的隔离级别
 */
public class JDBCDemo12 {
    public static void main(String[] args) {
        try(Connection connection=DBUtil.getConnection();){
            /**
             * 设置实物的隔离级别
             * 隔离级别在Connection上设置
             */
            //Connection提供了设置事务隔离级别的方法
            connection.setTransactionIsolation(Connection.TRANSACTION_READ_UNCOMMITTED);
            //connection.setAutoCommit(Connection.TRANSACTION_NONE);
            // connection.setAutoCommit(Connection.TRANSACTION_READ_COMMITTED);

            connection.setAutoCommit(false);
            String sql="INSERT INTO userinfo(username,password,nickname,age) " +
                    "VALUES(?,?,?,?)";
            PreparedStatement ps = connection.prepareStatement(sql);
            ps.setString(1,"王五");
            ps.setString(2,"123456");
            ps.setString(3,"老五");
            ps.setInt(4,18);
            int num = ps.executeUpdate();
            System.out.println(num>0?"添加成功":"添加失败");
        }catch (SQLException e){
            e.printStackTrace();
        }
    }
}
